Answer:
find the difference. find the sum
Step-by-step explanation:
Answer:
The first option is the correct one, the area of the shaded portion of the circle is
[/tex](5 \pi -11.6)ft^2[/tex]
Step-by-step explanation:
Let us first consider the triangle + the shadow.
The full area of the circle is the radius squared times pi, so
A=
Since 
, the area of the triangle + the shaded area is one fifth of the area of the whole circle, thus
If we want to know the area of the shaded part of the circle, we must subtract the area of the triangle from 
.
The area of the triangle is given by
Thus the area of the shaded portion of the circle is
Adding the parts in the ratio gives 18 so there are two triangles possible with perimeters less than 54cm where the side lengths are all integers: a 5, 6, 7 triangle or a 10, 12, 14 triangle.
Therefore the length of the longest side must be either 7cm or 14cm (unless you want to include non-integer side lengths, then it could also be 3.5cm, 1.75cm etc)
12 x 14 =168 square feet.
<span>If the pavers were 1 foot by 1 foot we would need 168 pavers </span>
<span>BUT.. your paver is 8 inches which is 8/12 or 2/3 of a foot. </span>
<span>It is 2/3 times 2/3 or 4/9 square ft </span>
<span>168 divided by 4/9 </span>
<span>which is the same as 168 times 9/4 </span>
<span>That will get you to 378.</span>
1) Start with 425. Then, take away 140 from it. It equals 285, right? Then, add 80 to that. That equals 365, so 365 ft. is your answer.
I am not amazing at math so I couldn’t help on the 2nd one. Hope this could sort of help!
